Oil-press



M. B. GREEN.

OIL PRESS.

APPLICATION FILED Nov. I9, 19I9.

Patented Aug. 10, 1920.

l L. 0 IIIII..

@XM/Immo UNITED STATES .PATENT OFFICE.

OIL-PRESS.

Application filed November 19, 1919.

T 0 all whom t may concern.'

Be it knownthat I, Miorinni. B. GREEN, a citizen yof the United States,yand resident of liIemphis, in the county of Shelby and lState ofTennessee, have invented certain new and useful Improvements in Oil-Presses, Yofwhich the following is a specilication, reference being hadtherein to the accompanying drawing.

This invention relates to oil presses and especially to the movableplates for sup'- porting the material to be pressed. This material isoften cotton-seed meal or the like and it is commonly inclosed in fabricbags forming rect-angular mat-like structures which are placed upon theplates just mentioned. These members, .each bearing such a mat, aresuperposed ina press frame and the bags or mats are subjected to veryhigh pressure until the meal is extremely dense and practically freedfrom its oil.

The bag supporting members are usually of high grade steel capable ofsustaining enormous pressure without danger of breaking, and areprovided with numerous passages to facilitate the escape of oil from allparts of the material, and the construction is such that clogging rarelyoccurs and the bags are rarely ruptured, while tendency of the bags tocrawl on the supporting plate member is avoided, and all parts arereadily made, assembled, replaced, or cleaned.

The members are each made up of a channeled metal base, and a preferablycontinuous or one-piece metal sheet secured upon the channeled basemember.

In the accompanying drawings,

Figure 1 is a plan View of a portion of the bag support, the upper platebeing broken away to expose the base.

Fig. 2 is a side or edge view of the same bag support, looking in thedirection of the arrow 2, Fig. 1.

Fig. 3 is an analogous view, looking in the direction of the arrow 3,Fig. 1.

Fig. 4 is a section on the line 1 -4, Fig. 1.

Fig. 5 is a section on the line 5 5, Fig. 1.

In these figures, A represents a base shown as a plane metal platehaving parallel longitudinal grooves or channels A', and B a face platesuperposed thereon, secured thereto by screws B', and provided withintegral low bosses C to engage the bag or Specification of LettersPatent.

Patented Aug. 10, 1920.

Serial No. 339,010.

mat of material, which bag is usually and most conveniently made to fitand cover the plate with its warp and woof threads substantiallyparallel to the longer and shorter sides of the plate. The plate is cutthrough .above each groove A to form a series of -so that oil may passthrough those portions of the plate above the ribs and escape into thechannels A or at the margins of the bag support. The plate is alsoprovided with conical recesses G below the bosses and vertical upwardlytapered passages Gr lead from the upper face of the bosses int-o theserecesses which are all directly over the channels A.

Practically it is found that slots are preferable to small circularperforations in allowing oil to escape from the meal, but I have foundby careful experiment that so long as oil need not travel far to reach aslot, perforations and slots may alternate without appreciable loss ofeectiveness, and further that the slots, if numerous, may be short. Ithas been usual to employ analogous slots to which either the warpthreads or the woof threads of mats, placed upon the plate in ordinaryposition, are parallel while only threads of the, other set cross theslots, and this placing the entire strain of a pressure of manythousands of pounds to the square inch upon one set of threads led tofrequent rupture of the fabric. By making the slots oblique with respectto the threads, both sets share the strain and ruptures are far lessfrequent.

It is well known that for various reasons the bags and their contentstend to crawl o n the plate rendering the thickness non-uniform. Therebysome thin portions receive less pressure and some oil fails to be eX-pressed. The use of the bosses at short slots of a set may be cutsimultaneously by saws on the same shaft.

It may further be noted that the metal bag support having all. its slotsoblique has advantages which could be obtained whether such support ismade as shown or otherwise, that is whether the plate be provided withthe screws, the bosses, or the recesses in its lower face.

What I claim' is:

'1. In a support of the class described, a bag supporting metal plateprovided with numerous slots extending therethrough and all oblique toboth warp and `woot threads vof the usual bags covering the plate andcontaining the oil bearing material.

2. The combination with a plane metal base .having ribs above separatedby wide grooves, of a mat-supporting plate' covering the base, restingon said ribs, having in its lower `face recesses directly above the ribsand in open communication with the adjacent grooves, and further havingperforavtions leading through the plate into said recesses and aperturesleading through the plate directly into the grooves, substantially asset forth.

3. In a support for mats of material in an oil press, a base having inits upper surface primarily open oil carrying channels, and a platesuperposed on said base and provided with a series of narrow slotsoblique with respect to the warp and woof of the usual press mats laidupon the plate, and all leading into said channels.

4. The combination with a plane metal base having a series of heavy fiattopped ribs above separated by wide grooves, of a plane mat-supportingplate resting on the ribs and having many small perforations directlyover said grooves and many others directly over said ribs, theperforations last mentioned opening into relatively large recesses inthe lower side of the plate and extending across and beyond the ribs anddownwardly open above the grooves.

5. The combination with a base member having its upper side'providedwith parallel grooves separated by ribs, of a plate secured to the base,covering its upper surface and provided with short oblique slotsextending approximately from side to side of the grooves to allow oil topass downward into the latter.

In testimony whereof I hereunto affix my signature.

MICHAEL B. GREEN.

